/**
 * INFINITY OS - Dark Neon Theme
 * Modern dark theme with cyan/pink neon accents
 * Compatible with existing site structure
 */

/* ===================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   =================================== */

:root {
  /* Dark Background Palette */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a25;
  --bg-elevated: #202030;
  
  /* Text Colors */
  --text-primary: #e8e8f0;
  --text-secondary: #b8b8c8;
  --text-muted: #888898;
  --text-inverse: #0a0a0f;
  
  /* Neon Accent Colors */
  --neon-cyan: #00ffff;
  --neon-cyan-glow: rgba(0, 255, 255, 0.5);
  --neon-pink: #ff00ff;
  --neon-pink-glow: rgba(255, 0, 255, 0.5);
  --neon-blue: #0080ff;
  --neon-purple: #8000ff;
  
  /* Semantic Colors */
  --color-success: #00ff88;
  --color-warning: #ffaa00;
  --color-error: #ff3366;
  --color-info: var(--neon-cyan);
  
  /* Border & Shadow */
  --border-subtle: rgba(255, 255, 255, 0.1);
  --border-bright: rgba(0, 255, 255, 0.3);
  --shadow-subtle: rgba(0, 0, 0, 0.3);
  --shadow-strong: rgba(0, 0, 0, 0.6);
  
  /* Spacing & Sizing */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}


/* ===================================
   BASE STYLES
   =================================== */

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Ensure proper contrast */
::selection {
  background-color: var(--neon-cyan);
  color: var(--text-inverse);
}

::-moz-selection {
  background-color: var(--neon-cyan);
  color: var(--text-inverse);
}


/* ===================================
   TYPOGRAPHY
   =================================== */

h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
  margin-top: 0;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

h1 {
  font-size: 2.5rem;
  text-shadow: 
    0 0 10px var(--neon-cyan-glow),
    0 0 20px var(--neon-cyan-glow),
    0 0 30px rgba(0, 255, 255, 0.2);
}

h2 {
  font-size: 2rem;
  text-shadow: 
    0 0 8px var(--neon-cyan-glow),
    0 0 16px rgba(0, 255, 255, 0.3);
}

h3 {
  font-size: 1.75rem;
  text-shadow: 
    0 0 6px var(--neon-cyan-glow),
    0 0 12px rgba(0, 255, 255, 0.2);
}

h4 {
  font-size: 1.5rem;
  text-shadow: 0 0 5px var(--neon-cyan-glow);
}

h5 {
  font-size: 1.25rem;
  color: var(--neon-cyan);
}

h6 {
  font-size: 1rem;
  color: var(--neon-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

p {
  margin-top: 0;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

strong, b {
  color: var(--text-primary);
  font-weight: 600;
}

em, i {
  color: var(--neon-cyan);
  font-style: italic;
}

code {
  background-color: var(--bg-tertiary);
  color: var(--neon-pink);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9em;
}

pre {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem;
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
}


/* ===================================
   LINKS
   =================================== */

a {
  color: var(--neon-cyan);
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
}

a:hover {
  color: var(--neon-pink);
  text-shadow: 
    0 0 8px var(--neon-pink-glow),
    0 0 16px var(--neon-pink-glow);
}

a:focus {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

a:active {
  color: var(--neon-blue);
}

/* Animated underline effect */
a.underline-effect {
  position: relative;
}

a.underline-effect::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -2px;
  left: 0;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-pink));
  transition: width var(--transition-normal);
}

a.underline-effect:hover::after {
  width: 100%;
}


/* ===================================
   BUTTONS
   =================================== */

button,
.btn,
input[type="submit"],
input[type="button"] {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid var(--neon-cyan);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(0, 255, 255, 0.1), rgba(0, 255, 255, 0.05));
  color: var(--neon-cyan);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  box-shadow: 
    0 0 10px var(--neon-cyan-glow),
    inset 0 0 10px rgba(0, 255, 255, 0.1);
}

button:hover,
.btn:hover,
input[type="submit"]:hover,
input[type="button"]:hover {
  background: linear-gradient(135deg, rgba(0, 255, 255, 0.2), rgba(255, 0, 255, 0.1));
  border-color: var(--neon-pink);
  color: var(--neon-pink);
  box-shadow: 
    0 0 20px var(--neon-pink-glow),
    0 0 40px var(--neon-pink-glow),
    inset 0 0 20px rgba(255, 0, 255, 0.2);
  transform: translateY(-2px);
}

button:active,
.btn:active,
input[type="submit"]:active,
input[type="button"]:active {
  transform: translateY(0);
  box-shadow: 
    0 0 10px var(--neon-cyan-glow),
    inset 0 0 10px rgba(0, 255, 255, 0.2);
}

button:focus,
.btn:focus,
input[type="submit"]:focus,
input[type="button"]:focus {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 3px;
}

button:disabled,
.btn:disabled,
input[type="submit"]:disabled,
input[type="button"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Button Variants */
.btn-primary {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-blue));
  border-color: var(--neon-cyan);
  color: var(--text-inverse);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
  border-color: var(--neon-pink);
}

.btn-secondary {
  background: var(--bg-secondary);
  border-color: var(--border-bright);
  color: var(--text-primary);
}

.btn-outline {
  background: transparent;
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
}

.btn-outline:hover {
  background: rgba(0, 255, 255, 0.1);
}

.btn-ghost {
  background: transparent;
  border: none;
  box-shadow: none;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--neon-cyan);
}


/* ===================================
   FORMS
   =================================== */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="search"],
textarea,
select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--neon-cyan);
  box-shadow: 
    0 0 0 3px var(--neon-cyan-glow),
    0 0 10px var(--neon-cyan-glow);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
}


/* ===================================
   CARDS & CONTAINERS
   =================================== */

.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 4px 6px var(--shadow-subtle);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: var(--neon-cyan);
  box-shadow: 
    0 8px 16px var(--shadow-strong),
    0 0 20px var(--neon-cyan-glow);
  transform: translateY(-4px);
}

.card-header {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.card-title {
  margin: 0;
  color: var(--neon-cyan);
}

.card-body {
  color: var(--text-secondary);
}

.card-footer {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}


/* ===================================
   UTILITY CLASSES
   =================================== */

/* Text utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-cyan { color: var(--neon-cyan); }
.text-pink { color: var(--neon-pink); }

.text-glow {
  text-shadow: 
    0 0 10px var(--neon-cyan-glow),
    0 0 20px var(--neon-cyan-glow);
}

/* Background utilities */
.bg-primary { background-color: var(--bg-primary); }
.bg-secondary { background-color: var(--bg-secondary); }
.bg-tertiary { background-color: var(--bg-tertiary); }

/* Spacing utilities */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

/* Display utilities */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }

/* Flex utilities */
.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-column {
  display: flex;
  flex-direction: column;
}


/* ===================================
   SPECIAL EFFECTS
   =================================== */

/* Neon border effect */
.neon-border {
  border: 2px solid var(--neon-cyan);
  box-shadow: 
    0 0 5px var(--neon-cyan-glow),
    inset 0 0 5px var(--neon-cyan-glow);
}

.neon-border-pink {
  border: 2px solid var(--neon-pink);
  box-shadow: 
    0 0 5px var(--neon-pink-glow),
    inset 0 0 5px var(--neon-pink-glow);
}

/* Glow effect */
.glow-cyan {
  box-shadow: 
    0 0 10px var(--neon-cyan-glow),
    0 0 20px var(--neon-cyan-glow),
    0 0 30px var(--neon-cyan-glow);
}

.glow-pink {
  box-shadow: 
    0 0 10px var(--neon-pink-glow),
    0 0 20px var(--neon-pink-glow),
    0 0 30px var(--neon-pink-glow);
}

/* Pulse animation */
@keyframes neon-pulse {
  0%, 100% {
    box-shadow: 
      0 0 5px var(--neon-cyan-glow),
      0 0 10px var(--neon-cyan-glow);
  }
  50% {
    box-shadow: 
      0 0 10px var(--neon-cyan-glow),
      0 0 20px var(--neon-cyan-glow),
      0 0 30px var(--neon-cyan-glow);
  }
}

.pulse {
  animation: neon-pulse 2s ease-in-out infinite;
}

/* Gradient text */
.gradient-text {
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}


/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  h4 { font-size: 1.25rem; }
  
  button,
  .btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.9rem;
  }
  
  .card {
    padding: 1rem;
  }
}

@media (max-width: 480px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  
  button,
  .btn {
    width: 100%;
    padding: 0.75rem;
  }
}


/* ===================================
   SCROLLBAR STYLING
   =================================== */

::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--neon-cyan);
  box-shadow: 0 0 10px var(--neon-cyan-glow);
}


/* ===================================
   PRINT STYLES
   =================================== */

@media print {
  /* Print-specific white background is acceptable */
  body {
    background: white;
    color: black;
  }
  
  h1, h2, h3, h4, h5, h6 {
    color: black;
    text-shadow: none;
  }
  
  a {
    color: black;
    text-decoration: underline;
  }
  
  .neon-border,
  .glow-cyan,
  .glow-pink {
    box-shadow: none;
    border: 1px solid black;
  }
}